JP6574897B2 - Filament three-dimensional combined body manufacturing apparatus and filament three-dimensional combined body manufacturing method - Google Patents

Description

  The present invention relates to an apparatus for manufacturing a filament three-dimensional combination used for a core material of an overlay mattress and the like, and a method for manufacturing a filament three-dimensional combination.

  As a core material (core) of an overlay mattress (mattress pad) that is laid on top of a conventional mattress or futon to improve sleeping comfort, a plurality of molten thermoplastic resin fibers (molten filaments) are three-dimensional. Attention has been focused on a three-dimensional filament-coupled body (hereinafter sometimes referred to as 3DF (3-dimensional filaments-linked structure)) coupled in a three-dimensional net shape.

  In this filament three-dimensionally bonded body, for example, a thermoplastic resin material such as polyethylene or polypropylene is extruded in a continuous linear shape (filament shape) from an extruder through a plurality of nozzles, and these filaments are arranged in a three-dimensional net shape. It is obtained by entangled and bonded (fused) and quickly cooled in that state (see Patent Document 1).

  FIG. 8 is a schematic diagram showing a main configuration of the filament three-dimensional assembly manufacturing apparatus according to the invention described in Patent Document 1. As shown in FIG.

  As shown in the figure, the three-dimensional joined body forming unit 30 of the filament three-dimensional joined body manufacturing apparatus includes a filament receiving plate (a pair of inclined guides) disposed below the molten filament forming part (die 20). Plate 31, 31), a conveying means (a pair of endless conveyors 32, 32) that sandwich and convey a collection of entangled filaments (three-dimensional coupled body 3DF), and a guide plate 31. A water supply conduit 39.

  The pair of inclined guide plates 31 and 31 (receiving plates) temporarily receive the molten filament MF discharged downward from the upper die 20 and drooping vertically downward (naturally falling) by its own weight, and the molten material deposited on the molten filament MF. A “three-dimensional entanglement” (that is, irregular (random) intersection) is generated in the filament MF so that large voids are formed between the filaments.

  Next, a pair of endless conveyors 32 and 32 are provided below the guide plates 31 and 31 to take out the above-described three-dimensional entangled molten filaments (MF) and store a cooling water tank 33 (not shown). (However, the water surface is indicated by 33a.) It is conveyed and cooled to fix the three-dimensional entanglement (bonding) of the filament.

  And the conduit | pipe 39 arrange | positioned on each said guide plate 31 discharges water from the hole provided in it, and a water film is formed on this guide plate 31 (on an inclined surface). Yes. As a result, the filament that has been placed (deposited) on the formed water film slides down on the guide plate 31 (water film) inward along the inclination of the guide plate 31, and these two guides. The left and right filaments merge between the plates 31 and 31 (gap) to form one long filament three-dimensional combination 3DF in which the filaments are entangled in a three-dimensional net shape.

International Publication No. 2012/035736

  By the way, in the manufacture of the filament three-dimensional combination as described above, the individual molten filaments MF discharged from the die 20 are connected to the nozzles in the order discharged from the nozzles and are freely dropped. During the fall, it begins to rotate irregularly due to the influence of wind (convection) and Coriolis force generated around it, and on the filament that has arrived (landed) on the guide plate 31 (inclined surface) first. , It will fall in a loop or spiral shape.

  However, the rotation of the melt filament MF that occurs naturally in this manner varies in the direction and cycle of the rotation, or the curvature or shape of the loop or spiral after landing, and the shape of the loop or the filaments. As a result, the filament density (or the distribution of the binding points) of the three-dimensional combined body 3DF varies due to this. That is, a hollow portion (a portion having an extremely low filament density) having a diameter of about 1 cm to 3 cm occurs in a part of the three-dimensional combination 3DF, or a hard portion (a portion having an extremely high filament density) having the same size. In some cases, the repulsive force (elasticity) may vary locally due to the occurrence of such a problem, and there is a problem in solving the problem.

  The purpose of the present invention is to stabilize the rotational direction and cycle of the molten filament during the fall, thereby suppressing variations in the shape of each filament constituting the three-dimensional bonded body, and variations in local repulsive force (elasticity). The present invention is to provide a production apparatus capable of producing a filament three-dimensional bonded body with a small amount, and a method for manufacturing a filament three-dimensional bonded body.

  The present invention is a filament three-dimensional assembly manufacturing apparatus for manufacturing a long filament three-dimensional assembly, and includes a molten resin supply means for supplying a molten thermoplastic resin material to a die, and the molten thermoplastic resin A die having a plurality of nozzles for discharging material downward as linear filaments, a filament insertion member having a plurality of through holes through which each filament hanging from the nozzle is inserted, and a horizontal biaxial direction of the filament insertion member Support means for freely supporting slide movement, drive means for applying acceleration in two axial directions along a horizontal plane to the filament insertion member, and swinging in a circle or ellipse, and a through hole of the filament insertion member An inclined guide plate that receives and guides each filament that has passed, and reaches the end of the guide plate along the inclination of the guide plate And conveying means for conveying into the filaments cooling water is filament three-dimensional coupling member production apparatus comprising: a.

  In the filament three-dimensional assembly manufacturing apparatus according to the present invention, a surface slipping film containing a fluorine-based resin or a silicon-based resin is formed on at least the inner peripheral wall of the through hole in the surface of the filament insertion member. It is characterized by.

  Furthermore, in the filament three-dimensional assembly manufacturing apparatus of the present invention, the filament insertion member has a clogging prevention water supply hole provided in a region other than the through hole on the upper surface thereof, and a flow path communicating with the hole. It is characterized by that.

On the other hand, the method for producing a filament three-dimensional conjugate of the present invention is a method for producing a filament three-dimensional conjugate for producing a long filament three-dimensional conjugate,
A molten resin supply step of supplying a molten thermoplastic resin material to the die;
Using a die having a nozzle, a molten filament forming step of discharging a plurality of filaments downward from the nozzle; and
Each filament that is discharged from the nozzle and hangs down is inserted into the through hole of the filament insertion member having a through hole corresponding to each filament, and in this state, the filament insertion member is swung circularly or elliptically in a horizontal plane. A filament displacing step for imparting a circumferential or elliptical circumferential movement along the swing of the filament insertion member to each of the suspended filaments;
A three-dimensional combined body forming step of forming a coiled three-dimensional combined body by stacking circularly or elliptically moving filaments on an inclined guide plate disposed on the lower side of the filament insertion member;
A cooling step of transporting and cooling the formed three-dimensional combined body in cooling water to fix the form of the three-dimensional combined body;
A method for producing a filament three-dimensional bonded body.

  According to the configuration of the filament three-dimensional assembly manufacturing apparatus of the present invention, the filament insertion member performs periodic circular motion or elliptical motion in the horizontal direction in a state where each filament hanging from the nozzle is inserted into the through hole. Can be made to swing. Moreover, the movement (circular motion or elliptical motion) in the circumferential direction or the elliptical circumferential direction along the swing of the filament insertion member can be imparted to each filament that is inserted through the through hole and hangs down.

  Therefore, in the filament three-dimensional assembly manufacturing apparatus, each filament that is discharged from the nozzle and passes through the filament insertion member and hangs down (drops) is landed in a regular loop on the guide plate. As a result, the filament three-dimensional assembly manufacturing apparatus of the present invention can form regular loops or spirals with the same spiral direction in the individual filaments constituting the three-dimensional assembly. Less local shape change. As a result, it is possible to obtain a filament three-dimensional bonded body in which fluctuations in local filament density and binding point distribution are reduced and local fluctuations in repulsive force are small.

  Further, in the filament three-dimensional joined body manufacturing apparatus of the present invention, a surface slipping film containing a fluorine-based resin or a silicon-based resin is formed on at least the inner peripheral wall of the through hole in the surface of the filament insertion member. Even when the filament passes through the through-hole, the molten filament is less likely to cause troubles such as adhering to the inner wall of the through-hole and causing clogging. Manufacturing can continue.

  Further, in the filament three-dimensional assembly manufacturing apparatus of the present invention, the filament insertion member includes a clogging prevention water supply hole provided in a region other than the through hole on the upper surface thereof, and a flow path communicating with the hole. The water supplied to the upper surface of the filament insertion member from the water supply hole falls together with the hanging filament through the through hole. Therefore, the water that has entered the through hole functions like a lubricant between the filament and the inner wall of the through hole, and more effectively prevents the molten filament from adhering to the inner wall of the through hole. Can do.

  On the other hand, each filament that is discharged from the nozzle and hangs down is inserted into the through hole of the filament insertion member, and a movement in the circumferential direction or the elliptical circumferential direction along the oscillation of the filament insertion member is given to each filament. According to the method for manufacturing a filament three-dimensional combination of the present invention, comprising the filament displacement step, each filament that passes through the filament insertion member and hangs down on the guide plate in the same manner as described above. Draw a spiral and land. As a result, the method for manufacturing a filament three-dimensional combination according to the present invention makes it easy for individual filaments constituting the three-dimensional combination to form regular loops or spirals. In addition, a filament three-dimensional bonded body suitable for a core material for a mattress with little change in density can be efficiently produced.

  In addition, since the filaments land in a regular loop, the filaments are stacked on the inclined guide plate so that the three-dimensional filament is made like a coil with a central axis inclined. You can also. If comprised in this way, the elasticity (repulsive force) of the said filament three-dimensional conjugate | bonded_body will be stabilized more, and it can be maintained over a long period of time.

Objects, features, and advantages of the present invention will become more apparent from the following detailed description and drawings.
It is the schematic which shows the whole structure of the filament three-dimensional conjugate | bonded_body manufacturing apparatus in embodiment of this invention. FIG. 2 is an end view taken along line XX ′ in FIG. 1 showing a configuration of a three-dimensional conjugate forming means in the filament three-dimensional conjugate manufacturing apparatus. It is the schematic which expands and shows the principal part structure of the said three-dimensional coupling body formation means. It is a perspective view which shows the example of a shape of the melt filament discharge port (nozzle) used with the said filament three-dimensional conjugate | bonded_body manufacturing apparatus. It is a perspective view which shows the structural example of the filament insertion member used with the said filament three-dimensional conjugate | bonded_body manufacturing apparatus. It is a fragmentary sectional view which shows the example of a shape of the filament insertion member used with the said filament three-dimensional conjugate | bonded_body manufacturing apparatus. It is a figure explaining the rocking | fluctuation state of the filament insertion member used with the said filament three-dimensional coupling body manufacturing apparatus. It is a figure explaining the partial structure of the conventional filament three-dimensional conjugate | bonded_body manufacturing apparatus.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a view of the entire configuration of a filament three-dimensional assembly manufacturing apparatus according to an embodiment of the present invention as viewed from the lateral direction of the process, and FIG. FIG. 2 is a view taken along the line XX ′ of FIG. FIG. 3 is a schematic configuration diagram of the main part of the three-dimensional combined body forming means viewed from the lateral direction of the process.

  As shown in FIG. 1, the filament three-dimensional assembly manufacturing apparatus of the present embodiment includes a molten resin supply means (extruder 10), a molten filament forming unit (die) 20 that discharges a molten filament (reference numeral MF), A three-dimensional combined body forming unit 30 including a conveyance path of a filament three-dimensional combined body (denoted by reference numeral 3DF) installed in the water tank 33, a filament displacement controller 40, and the overall performance of the filament three-dimensional combined body. And a control means such as a computer for centrally controlling (finish).

  In each figure, the filament displacement controller 40, the conveyor controller 36 (filament density control means), the control means such as a computer, and signal lines connected to these may be omitted.

  The molten resin supply unit (extruder 10) includes a hopper 11 (material input unit), a screw 12, a screw motor 13, screw heaters 14A, 14B, and 14C, and a material discharge unit 15, and is supplied from the hopper 11. The thermoplastic resin is melted in the cylinder of the extruder 10 and is discharged as a molten resin from the material discharge portion 15 toward the molten filament forming portion (die 20).

  The die 20 includes a base plate 21 (see FIG. 4) having a plurality of nozzle holes 21a, and die heaters 22 (22A, 22B, 22C, 22D, 22E, 22F in FIG. 2) and 23 (23A in FIG. 2). 23B, 23C), and the molten resin supplied from the material discharge part 15 (discharge port) of the extruder 10 to the die guide flow path 20a is directed vertically downward from the plurality of nozzle holes 21a. It is discharged as MF. As illustrated in FIG. 4, the nozzle holes 21 a of the base plate 21 are usually provided in a row along the width direction of the product (three-dimensional combination), and this nozzle hole row is defined as the product thickness. Multiple rows are arranged in the direction.

  As shown in FIG. 1, the three-dimensional combined body forming unit 30 includes a water tank 33 for storing cooling water and a filament three-dimensional combined body 3DF in which the molten filament MF is entangled and combined in a three-dimensional net shape. ) Endless conveyors 32A and 32B for cooling while maintaining the shape and thickness. A receiving plate (inclined guide) that facilitates retention of the molten filament MF, as in the conventional case, is located immediately below the base plate 21 (the plurality of nozzle holes 21a) and above the endless conveyors 32A and 32B. Plates 31A, 31B) are provided, and the molten filaments MF once stay (over a moment) on the upper surfaces of the guide plates 31A, 31B and overlap each other, so that the molten filaments MF are coupled to each other in a three-dimensional manner ( (Binding) occurs.

  In addition, the code | symbol 39 in a figure is a conduit | pipe (watering pipe) for forming a water film on each guide plate 31A, 31B (an upper surface and an inclined surface) similarly to a prior art example, and formed water The molten filament MF that has been (deposited) on the film slides down on the guide plate (water film) inward along the inclination of the guide plates 31A and 31B, and these two guide plates 31A and 31B. In between (gap), the filaments before and after the product thickness direction merge to form one filament three-dimensional combination 3DF (long shape) in which the filaments are entangled in a three-dimensional net shape or spiral shape ( (See FIG. 3).

  Further, the formed filament three-dimensional combination 3DF is sandwiched and conveyed between the endless conveyors 32A and 32B, and the three-dimensional combination 3DF discharged from the lower end into the water in the water tank 33 is shown in FIG. Thus, it passes through the conveyance path in the water tank 33 which consists of each conveyance roller 34A-34E, is cooled completely, and is taken out from the said water tank 33 by the conveyance rollers 34F and 34G which have a driving force.

  The structural features of the apparatus and method for manufacturing a filament three-dimensional assembly of the present embodiment having the above-described configuration are as follows. The nozzle hole 21a and each of the above-described nozzles A plurality of molten filaments MF that are in the middle of drooping can be inserted into the sections where the molten filaments MF are freely suspended between the inclined guide plates 31A and 31B, as shown in FIG. The filament insertion member 37 provided with a filament insertion hole (through hole 37a penetrating in the vertical thickness direction) is provided.

  The filament insertion member 37 is supported by a support means (not shown) so as to be movable in two horizontal axes (XY directions in the horizontal plane), and as shown in FIG. 2, both end portions in the product width direction. (The portion where the water supply pipes 37c and 37d are provided) is connected to driving means 38A and 38B. The driving means 38A and 38B are connected to the filament insertion member 37 in two axes along the horizontal plane ( An acceleration in the (XY) direction is applied, and the filament insertion member 37 is configured to impart a circular or elliptical motion (oscillation) as shown in FIG.

  According to the above configuration, the molten filaments MF discharged from the nozzle holes 21a of the die 20 are each circular or elliptical of the filament insertion member 37, as shown in the enlarged view of the main part of FIG. 3, a three-dimensional coil-shaped (or spiral-shaped) filament is stacked on the open water surface (water surface 33a for cooling water) formed on or between the guide plates 31A and 31B. Form body 3DF.

  Thereby, the manufacturing apparatus and manufacturing method of the filament three-dimensional conjugate | bonded_body of this embodiment can manufacture the coil-shaped stable filament three-dimensional conjugate | bonded_body with little fluctuation | variation of a filament density or a binding point distribution.

  The members constituting the filament three-dimensional assembly manufacturing apparatus will be described in more detail. The filament through-hole 37a formed in the filament insertion member 37 is, for example, a straight pipe hole having an inner diameter of 5 mm and adjacent penetration. The distance (pitch) between the holes 37a is set to 10 mm in this example in accordance with the pitch of the nozzle holes 21a. In addition, when the inner diameter of the through hole 37a is increased, the loop diameter (amplitude) of the molten filament MF is reduced with respect to the rotational swing amplitude of the filament insertion member 37. Therefore, the loop diameter of the filament in the three-dimensional joined body 3DF is reduced. The inner diameter of the through-hole 37a is changed according to the position, such as designing the inner diameter of the through-hole 37a to be small and designing the inner diameter of the through-hole 37a to be small to the position where the filament loop diameter is to be reduced. You may change according to the thickness (inner diameter of a nozzle hole) of the melt filament MF.

  For example, when the diameter of the nozzle hole 21a in the vicinity of the center portion of the base plate 21 is relatively large (the nozzle hole diameter in the vicinity of the end portion of the base plate 21 is relatively small), the central portion of the filament insertion member 37 By making the inner diameter of the nearby through hole 37a relatively small (the inner diameter of the through hole 37a near the center is relatively large), the loop diameter of the relatively thick filament is increased, and the relatively thin filament The loop diameter can also be reduced.

  In the embodiment, the through-hole 37a of the filament insertion member 37 is formed so as to correspond to each filament on a one-to-one basis (the same number), but two or more filaments are provided for one through-hole 37a. You may make it penetrate. Further, some (end) filaments may not pass through the through-hole 37a, and the shape of each through-hole 37a is not limited to a circle but may be an irregular shape such as an ellipse, a polygon, or a star. Also good. Furthermore, the shape of the through hole 37a may be a long hole or a long hole, or a long and narrow rectangular shape or slit shape through which a plurality of filaments can be inserted into one through hole 37a. By adopting these shapes, even if the motion trajectory of the through-hole 37a itself is circular, the movement of each filament penetrating through the through-hole 37a can be made to be close to a motion reciprocating on a straight line.

  The filament insertion member 37 is driven by the drive means 38A and 38B so that each through hole 37a of the filament insertion member 37 is a circle having an inner diameter of 5 cm as a movement locus and rotates once in 3 seconds. The two-dimensional rotation is performed at a constant speed along the horizontal plane. In the present invention, the driving by the driving means 38A, 38B is accelerated in a two-dimensional manner so that when each through hole 37a is viewed from above in the vertical direction, the movement locus of the through hole becomes circular (or elliptical). Add The circular or elliptical motion of the through-hole 37a may be not only a two-dimensional motion in the horizontal plane but also a three-dimensional motion with a vertical motion. Further, the melt filament MF discharged from each nozzle hole 21a of the die 20 changes from a linear drop to a spiral drop due to the movement of the through hole 37a, so that a twisting stress is applied thereto. . Therefore, if the distance between the base plate of the nozzle portion 21 and the filament insertion member 37 is too short, the torsional stress is not sufficiently relaxed in each molten filament, and stress strain remains. As described above, when the stress strain remains without being relaxed, an irregular spiral shape is easily formed. Therefore, the distance between the base plate of the nozzle portion 21 and the filament insertion member 37 is preferably 10 cm or more. Further, when the distance between the base plate of the nozzle portion 21 and the filament insertion member 37 is increased, heating by a far infrared heater or the like is performed between the base plate and the filament insertion member 37 so that the molten filament does not cool. It is preferable to provide a means or a windshield.

  Next, on the surface (upper surface) of the filament insertion member 37, as shown in the enlarged view of FIG. 6, a water flow path (not shown) provided in an area other than the filament insertion hole (through hole 37a) is provided. A water supply hole 37b communicating with the through hole 37a is provided to the surface (upper surface) of the filament insertion member 37 through the water supply hole 37b. Yes. The pipes 37c and 37d at the ends of the filament insertion member 37 in FIG. 5 are for supplying the water for preventing clogging to the water supply holes 37b.

  With this configuration, water supplied to the upper surface of the filament insertion member 37 falls through the through hole 37a together with the molten filament MF passing through the through hole 37a. Therefore, the falling water functions like a lubricant between the filament and the hole inner wall, and can effectively prevent the molten filament MF from adhering to the inner wall of the through hole 37a.

  The upper surface of the filament insertion member 37 including the inner wall of the through hole 37a may be sandblasted to roughen these wall surfaces or upper surface. Thereby, the wettability with respect to water of the upper surface of the filament insertion member 37 including the inner wall of the through hole 37a is improved, and the water for preventing clogging supplied from the water supply hole 37b can be spread widely and evenly. Can do.

  Further, the upper surface of the filament insertion member 37 including the inner wall of the through hole 37a may be covered with a water-retaining film (water-permeable film). The water-retaining film is not particularly limited as long as it has a water-retaining effect. However, a cloth or mesh made of water-absorbing fiber, a sheet containing cellulose fiber, or the like can be used, and hydrophilicity excellent in heat resistance. A resin coating containing silica particles can also be used.

  Furthermore, as a method for preventing the molten filament from fusing to the filament penetrating member 37, in addition to a method using water as a mold releasing agent, a mold releasing agent is provided on the upper surface of the filament insertion member 37 including the inner wall of the through hole 37a. A coating layer (surface slipping film) made of a resin having a low surface energy may be provided. As the resin having a low surface energy, it is possible to use a fluorine-based resin, a silicone-based resin such as silicone oil, wax, or the like, to which the molten filament is difficult to adhere.

  The wax is a low-viscosity liquid when melted, but becomes a solid at room temperature, so that the effect of not sticking the surface of the obtained filament three-dimensional bonded body is obtained. As the wax, paraffin wax, Fischer-Tropsch wax, microcrystalline wax, carnauba wax, low molecular weight polyethylene wax, low molecular weight polypropylene wax and the like can be used. If the melting point of the wax is lower than the boiling point of water, the wax may be deposited and clogged in the piping through which the cooling water is circulated after being dissolved in the cooling water. Polyethylene and low molecular weight polypropylene waxes are preferred.

  Further, as a method for supplying a release agent such as silicone oil or wax to the filament penetrating member 37, it can be performed in the same manner as when water is used as the release agent, and the material constituting the molten filament can be used. There is a method of adding in. If the amount of the release agent added to the thermoplastic resin is too small, it is difficult to obtain a release effect, and if the amount of the release agent added to the thermoplastic resin is too large, a strong bond cannot be formed at the time of fusion bonding. The amount of the release agent added to the thermoplastic resin is preferably in the range of 0.1 to 1 part by weight of the release agent with respect to 100 parts by weight of the thermoplastic resin.

  Furthermore, as a method for preventing the molten filament from fusing to the filament penetrating member 37, an ultrasonic vibration element is provided in the filament insertion member 37, and the vicinity of the contact surface with the molten filament MF is vibrated. You may use the method of preventing melt | fusion of this.

  The sandblasting, water-retaining film (film), surface-sliding film such as silicone oil and wax, and ultrasonic vibration may be used in combination. Further, when the surface slipping film or the ultrasonic vibration element is provided, the water supply hole 37b and the pipes 37c and 37d are not provided, and water for preventing clogging is not supplied to the upper surface of the filament insertion member 37. Also good.

  The clogging prevention water supplied to the surface (upper surface) of the filament insertion member 37 through the water supply hole 37b is preferably 80 ° C. or higher and 95 ° C. or lower. If the temperature of the water for preventing clogging is too low, the temperature of the molten filament MF is locally lowered and is likely to be distorted. On the other hand, if it is too high, the water evaporates into the atmosphere and the through hole 37a. There is a risk that it will not reach.

  Examples of the thermoplastic resin that can be used as a material for the filament three-dimensional combination in the embodiment of the present invention include, for example, polyolefin resins such as polyethylene and polypropylene, polyester resins such as polyethylene terephthalate, nylon (registered trademark) 66 or Polyamide resins such as polyamide 66, polyvinyl chloride resins, polystyrene resins, styrene elastomers, vinyl chloride elastomers, olefin elastomers, urethane elastomers, polyester elastomers, nitrile elastomers, polyamide elastomers, fluorine elastomers, etc. Thermoplastic elastomers can be used. Also, these resins and elastomers can be blended for use.

  Each nozzle hole 21a of the die 20 (die plate 21) that melts and discharges the resin can have, for example, an inner diameter (bore diameter) of 1 mm and an interval (pitch) between adjacent nozzle holes of 10 mm. The nozzle shape, nozzle inner diameter, nozzle interval, nozzle arrangement, and the like can be appropriately adjusted based on the specifications of the repulsive force of the filament three-dimensional combination 3DF to be obtained.

  The endless conveyors 32A and 32B that take up the filament three-dimensional combination 3DF include a driving roller, a driven roller, and an endless belt made of a metal mesh stretched by the driving roller and the driven roller, respectively, and are not shown in the drawings. The drive motor 35 is rotationally driven. In this embodiment, a belt is used if it is made of a net-like metal mesh, but there is no particular limitation as long as it is a transport member, and a slat conveyor or the like may be used.

  The endless conveyors 32A and 32B are given the three-dimensional shape, and the filament three-dimensional combination 3DF that has reached the ends (inner edges) of the guide plates 31A and 31B along the inclination of the guide plates 31A and 31B It is sandwiched and taken at a predetermined pulling speed, and cooled and fixed while maintaining the three-dimensional shape and thickness of the three-dimensional combined body 3DF.

  A filament displacement controller 40 that controls the speed and magnitude (runout width) of circular motion or elliptic motion of the filament insertion member 37 is connected to the drive means 38A, 38B of the filament insertion member 37 described above. Further, a filament controller 36 (filament density control means: not shown) that controls the speed of the conveyor drive motor 35 and the filament displacement controller 40 are integrated and controlled above the filament displacement controller 40 to control the filament. Control means (computer or the like) that controls the shape and density of the loop (coil) of the entire three-dimensional combination 3DF is disposed.

  With the above configuration, the manufacturing apparatus and manufacturing method of the filament three-dimensional combination according to the present embodiment suppresses variation in the shape of each filament constituting the three-dimensional combination, and there is little variation in local repulsive force (elasticity). The filament three-dimensional combination suitable for the core material for mattress can be manufactured continuously and efficiently.

  The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiment is merely an example in all points, and the scope of the present invention is shown in the scope of claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the claims are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Extruder 11 Hopper 12 Screw 13 Screw motor 14A, 14B, 14C Screw heater 15 Material discharge part 20 Die 20a Die guide flow path 21 Base plate 21a Nozzle hole 22A, 22B, 22C, 22D, 22E, 22F Die heater 23A, 23B , 23C Die heater 30 3D joint forming part 31A, 31B Guide plate 32A, 32B Endless conveyor 33 Water tank 33a Water surface 34A, 34B, 34C, 34D, 34E Transport roller 34F, 34G Transport roller 35 Conveyor drive motor 36 Motor rotation controller 37 Filament Insertion member 37a Through hole 37b Water supply hole 37c, 37d Pipe 38A, 38B Driving means 39 Conduit 40 Filament displacement controller MF Fused filament 3DF Instrument 3-dimensional conjugate

Claims (4)

A filament three-dimensional combined body manufacturing apparatus for manufacturing a long filament three-dimensional combined body,
A molten resin supply means for supplying a molten thermoplastic resin material to the die;
A die having a plurality of nozzles for discharging the molten thermoplastic resin material downward as a linear filament;
A filament insertion member having a plurality of through holes through which each filament hanging from the nozzle is inserted,
Support means for freely supporting sliding movement in the horizontal biaxial direction of the filament insertion member;
Driving means for applying an acceleration to the filament insertion member in a biaxial direction along a horizontal plane so as to swing in a circular or elliptical shape;
An inclined guide plate that receives and guides each filament that has passed through the through hole of the filament insertion member;
Conveying means for conveying the filament that has reached the end of the guide plate along the inclination of the guide plate into the cooling water;
An apparatus for manufacturing a filament three-dimensional assembly, comprising:   2. The filament three-dimensional according to claim 1, wherein a surface slipping film containing a fluorine-based resin or a silicon-based resin is formed on at least an inner peripheral wall of the through-hole in the surface of the filament insertion member. Combined body manufacturing equipment.   The said filament insertion member has the water supply hole for clogging prevention provided in the area | regions other than the said through-hole on the upper surface, and the flow path connected to this hole, The Claim 1 or 2 characterized by the above-mentioned. Filament three-dimensional assembly manufacturing apparatus. A method of manufacturing a filament three-dimensional combination for manufacturing a long filament three-dimensional combination,
A molten resin supply step of supplying a molten thermoplastic resin material to the die;
Using a die having a nozzle, a molten filament forming step of discharging a plurality of filaments downward from the nozzle; and
Each filament that is discharged from the nozzle and hangs down is inserted into the through hole of the filament insertion member having a through hole corresponding to each filament, and in this state, the filament insertion member is swung circularly or elliptically in a horizontal plane. A filament displacing step for imparting a circumferential or elliptical circumferential movement along the swing of the filament insertion member to each of the suspended filaments;
A three-dimensional combined body forming step of forming a coiled three-dimensional combined body by stacking circularly or elliptically moving filaments on an inclined guide plate disposed on the lower side of the filament insertion member;
A cooling step of transporting and cooling the formed three-dimensional combined body in cooling water to fix the form of the three-dimensional combined body;
The manufacturing method of the filament three-dimensional coupling | bonding body characterized by including this.

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